https://llvm.org/bugs/show_bug.cgi?id=28506
Bug ID: 28506
Summary: <cmath>: C++11 templates disabled (?) on sunos
Product: libc++
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: All Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: mgo...@gentoo.org
CC: llvm-bugs@lists.llvm.org, mclow.li...@gmail.com
Classification: Unclassified
I'm attempting to build new LLVM using current nightly pathCC (w/ libcxx
backend) on openindiana. I'm getting the following error:
/root/mgorny-test/enzo-suite/ekopath/psllvm/lib/DebugInfo/Symbolize/DIPrinter.cpp:52:41:
error:
call to 'log10' is ambiguous
size_t MaxLineNumberWidth = std::ceil(std::log10(LastLine));
^~~~~~~~~~
/usr/include/iso/math_iso.h:81:15: note: candidate function
extern double log10 __P((double));
^
/usr/include/iso/math_iso.h:179:15: note: candidate function
inline float log10(float __X) { return __log10f(__X); }
^
/usr/include/iso/math_iso.h:209:21: note: candidate function
inline long double log10(long double __X) { return __log10l(__X); }
^
1 error generated.
It seems that LLVM has started relying on the C++11 integral definition of
log10(). However, the one provided in libcxx is #ifndef'ed for __sun__. I guess
this happens because system math.h is including iso/math_iso.h which has some
C++ definitions aside the usual C functions. Sadly, those definitions lack
support for C++11.
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